Question 1

Is OP-7 octylphenol polyoxyethylene ether harmful to the human body? Does it have an impact on the environment?

Accepted Answer

OP-7 octylphenol polyoxyethylene ether has mild to moderate irritancy to the human body, is toxic to aquatic organisms, and may cause long-term adverse effects on the aquatic environment. Detailed Description OP-7 octylphenol polyoxyethylene ether is a nonionic surctant. Under normal industrial use conditions and following standard operating procedures, risks are controllable but not completely harmless. According to the chemical safety data sheet provided by Guoli Chemical, this product is irritating to eyes and skin. Long-term or repeated contact may cause skin detting and dermatitis. Its impact on the aquatic environment is particularly noteworthy—degradation intermediates (such as short-chain alkylphenols) may be environmentally persistent and toxic to aquatic organisms. From a human health perspective, the main exposure risks of OP-7 are concentrated in direct contact scenarios. Eye contact may cause irritant reactions; short-term skin contact may cause mild to moderate irritation, while long-term repeated contact may strip the skin's lipid layer, leading to dryness, cracking, and even dermatitis. Inhalation of vapors or mists generated under high temperatures may cause respiratory discomfort, and accidental ingestion may trigger gastrointestinal reactions. It is worth noting that no specific occupational exposure limit has been established for this product; therefore, enterprises should manage its use in accordance with general industrial hygiene standards for nonionic surctants. From an environmental perspective, OP-7 belongs to the alkylphenol polyoxyethylene ether (APEO) group, and its environmental te has been a global focus of concern. This product is toxic to aquatic organisms (GHS Aquatic Toxicity Category 2). Discharge into water bodies may harm aquatic ecosystems such as fish, invertebrates, and algae. More critically, its degradation intermediates in the natural environment—short-chain alkylphenols (e.g., octylphenol)—have greater persistence and endocrine-disrupting potential, may accumulate in organisms, and be transmitted through the food chain. Therefore, it is strictly prohibited to directly discharge waste liquid containing OP-7 into sewers or surce water bodies. Safety and Environmental Protection Measures CategoryHazard LevelKey Protective Measures Eye ContactIrritant (GHS Category 2A)Wear splash-proof safety goggles; if contact occurs, immediately rinse with plenty of water for at least 15 minutes and seek medical attention. Skin ContactMild to moderate irritation (GHS Category 2)Wear nitrile or neoprene protective gloves; after contact, wash thoroughly with soap and water. Inhalation RiskVapors/mists may cause respiratory discomfortEnsure good ventilation; use local exhaust or respiratory protection as needed. Ingestion RiskMay cause gastrointestinal discomfortDo not induce vomiting; rinse mouth immediately and seek medical attention. Aquatic ToxicityToxic to aquatic organisms (GHS Category 2)Strictly prohibit discharge into water bodies; waste liquid should be sent to qualified cilities for incineration or biological treatment. Environmental PersistenceDegradation intermediates are of persistence concernStrictly control discharge; waste liquid after use must be collected and disposed of in accordance with regulations. Application Recommendations In industrial applications, OP-7 is widely used in textiles, pesticides, metal processing, emulsion polymerization, and other fields due to its excellent emulsifying, wetting, and cleaning properties. However, during use, enterprises should establish a comprehensive chemical management system: operators must receive safety training and wear appropriate personal protective equipment; production workshops should be equipped with effective ventilation and exhaust cilities; the wastewater treatment system should have the capability to degrade alkylphenol polyoxyethylene ethers. For end products with environmental compliance requirements (e.g., exported textiles, food contact materials), it is recommended to pay attention to the restrictive regulations on APEO substances in target markets, and if necessary, evaluate the feasibility of using tty alcohol polyoxyethylene ethers (AEO) or other environmentally friendly alternatives. Precautions After operation, thoroughly wash exposed skin; shower and change clothes after work. Strictly prohibit eating, drinking, or smoking in the workplace to prevent accidental ingestion. In case of product leakage, immediately collect with inert absorbent materials (e.g., sand, vermiculite); do not flush directly into the drainage system with water. Storage temperature recommended between 5°C and 35°C, avoid freezing; turbidity or solidification at low temperatures is normal and does not affect quality after returning to room temperature. Products beyond the two-year shelf life should be tested to confirm quality before use.

Question 2

What should I do if problems occur during the use of OP-7 octylphenol polyoxyethylene ether? How to obtain technical support?

Accepted Answer

Don't panic when problems occur during the use of OP-7. First, check the product characteristics and process conditions one by one. Most problems can be solved by adjusting operating parameters or compounding schemes. If the problem cannot be resolved, contact Guoli Chemical for professional technical support. Common problems and troubleshooting ideas OP-7 octylphenol polyoxyethylene ether is a nonionic surctant (HLB value approximately 11.7, cloud point 25~35°C). Its performance is significantly affected by ctors such as temperature, electrolyte concentration, and compatible additives. When encountering problems, please investigate from the following aspects: 1. Poor emulsification effect or emulsion delamination: First, confirm whether the operating temperature is near or above the cloud point of OP-7. When the temperature is too high (>35°C), OP-7 will precipitate from water, become turbid, and its emulsifying power will drop sharply. Try lowering the operating temperature. Next, check whether the oil-water ratio is within the suitable range for OP-7, and whether it is necessary to use it in combination with other emulsifiers (such as surctants with lower HLB values) to broaden the emulsification range. In addition, high water hardness or high electrolyte content may also affect emulsion stability. 2. Unsatisctory cleaning/degreasing effect: Check whether the working fluid concentration is sufficient (recommended to start testing from 1~5g/L), and confirm whether the cleaning temperature reaches the optimal window. OP-7 performs better in alkaline systems (pH 9~12) for detergency. You can try adding appropriate amounts of soda ash, sodium tripolyphosphate, and other additives. If excessive foam affects spray cleaning, this is normal - although OP-7 is a low-foaming type, it may still foam under certain conditions. A small amount of organic silicone defoamer can be used. 3. Abnormal product appearance (turbidity, delamination, solidification): At low temperatures ( 4. Precipitation or ilure when compounded with other additives: Check whether the formulation contains high concentrations of anionic surctants or strong electrolytes. Although OP-7 has good compatibility, phase separation may still occur under extreme ratios. It is recommended to conduct small-scale tests to investigate compatible materials one by one. Safety emergency treatment If personal contact or spillage occurs during use, follow these steps immediately: Skin contact: Immediately remove contaminated clothing and rinse with plenty of water and soap for at least 15 minutes. If redness or persistent irritation occurs, seek medical attention. Eye contact: Immediately open eyelids and rinse with plenty of water or saline for at least 15 minutes. Do not rub. Seek medical attention immediately. Inhalation discomfort: Move the person to fresh air, keep the airway open, and administer oxygen if necessary. Seek medical attention. Spill treatment: For small spills, absorb with sand or vermiculite and collect into a sealed container. For large spills, build dikes to control spread and avoid discharge into sewers or water bodies. How to obtain technical support from Guoli Chemical There is no publicly available technical support hotline or online customer service information in the Guoli Chemical product database. It is recommended to obtain official technical support through the following methods: Visit the official website: Find the "Contact Us" or "Technical Support" page on the official website of Hai'an County Guoli Chemical Co., Ltd. to obtain the latest service hotline and email. Contact the sales representative: If purchased through a distributor or salesperson, you can directly contact them for technical support referral services. Product packaging label: The product packaging drum is usually printed with the manucturer's contact information. You can call or email for consultation based on this. Provide detailed information: When contacting technical support, please prepare the product batch number, application field, working fluid formulation, operating conditions (temperature, concentration, pH, etc.), and a specific description of the problem so that the technical engineer can quickly locate the issue. Precautions This product is toxic to aquatic life. Do not discharge waste liquid containing OP-7 directly into water bodies. Waste liquid should be disposed of by qualified institutions after use. When handling, wear personal protective equipment such as nitrile gloves and safety glasses, and ensure good ventilation in the workplace. Products exceeding two years must be tested to confirm quality before use.

Question 3

How to purchase OP-7 Octylphenol Polyoxyethylene Ether? What is the minimum order quantity?

Accepted Answer

To purchase OP-7 Octylphenol Polyoxyethylene Ether, you can directly contact the Guoli Chemical sales team. The minimum order quantity is usually one standard packaging unit. Purchase Process and Contact Information OP-7 Octylphenol Polyoxyethylene Ether is a regular product of Guoli Chemical. You can make a purchase by the following methods: Call the company sales hotline, send an inquiry email, or submit an inquiry form online through the official website. It is recommended to specify the product name (OP-7 or Octylphenol Polyoxyethylene Ether), required quantity, preferred packaging size, and intended use in the inquiry, so that sales personnel can provide accurate quotations and technical support. Guoli Chemical supports sample application services; first-time customers can request samples for small-scale verification. The actual transaction price depends on the order quantity, current raw material market conditions, and logistics methods. It is recommended to confirm the latest quotation directly with the sales team. Packaging Specifications and Minimum Order Quantity According to the Guoli Chemical product database, OP-7 Octylphenol Polyoxyethylene Ether is available in the following standard packaging specifications: Packaging Type Specification Application Scenario Plastic drum 50kg/drum Small batch trial or small to medium scale formulation Plastic drum 200kg/drum Regular industrial batch procurement IBC tote tank Approximately 1000kg/tank Large batch continuous production demand The minimum order quantity is generally based on a single packaging unit (e.g., starting from 50kg). Volume orders can enjoy tiered price discounts. For specific minimum order quantities and pricing policies, please contact the sales team for the latest information. Pre-order Considerations Before placing an order, it is recommended to confirm the following information: product storage conditions (5°C~35°C, cool and dry place, shelf life two years), compatibility with your formulation system (OP-7 is a nonionic surctant with an HLB value of about 11.7, cloud point 25~35°C, resistant to acid, alkali, and hard water), and transportation logistics arrangements (conventional land transport, do not mix with strong oxidizers). If there are special packaging or customization requirements, please communicate with the sales team in advance. Price Explanation The product price of Guoli Chemical fluctuates with market raw material conditions. The above reference price is for budget reference only. The actual transaction is subject to the latest quotation issued by the sales team.

Question 4

Does OP-7 Octylphenol Polyoxyethylene Ether meet environmental requirements? Can you provide a test report?

Accepted Answer

OP-7 belongs to the APEO class of surctants, which are toxic to aquatic organisms and have environmentally persistent degradation products. It is strictly regulated in some countries and regions, and its environmental compliance should be carefully evaluated. For test reports, please contact Guoli Chemical directly. Detailed Explanation OP-7 Octylphenol Polyoxyethylene Ether is a alkylphenol polyoxyethylene ether (APEO) nonionic surctant. According to the Safety Data Sheet (SDS) of Guoli Chemical, it is clearly stated: This product is toxic to aquatic organisms, may cause long-term adverse effects to the aquatic environment, and its degradation intermediates raise concerns regarding environmental persistence. In the GHS classification, its environmental hazard is classified as Aquatic Toxicity Category 2. This means that if discharged into water bodies without proper treatment, it can harm aquatic ecosystems. In terms of environmental regulations, APEO products ce increasingly stringent restrictions worldwide. Particularly under the EU REACH framework, multiple APEO compounds have been included in the Candidate List of Substances of Very High Concern (SVHC) or restricted substance lists. Export-oriented industries such as textiles and leather generally require APEO content in products to be below specified thresholds. Therefore, whether OP-7 meets "environmental requirements" should be comprehensively assessed based on your target market, industry standards, and specific discharge control conditions; it cannot be generalized. In domestic industrial applications, as long as waste is properly disposed of in accordance with SDS requirements and discharge into water bodies is strictly prohibited, it can still be used within a compliant framework. Regarding test reports, this product database currently does not include download links for relevant electronic test documents. If you need ROHS testing, REACH compliance declarations, SGS test reports, or actual environmental indicator measurement data, it is recommended to directly contact the Quality Inspection Department or Sales Customer Service of Hai'an County Guoli Chemical Co., Ltd. We can provide batch test reports or arrange third-party testing services based on your specific needs. Technical Parameters (Environmental Protection Related Indicators) Indicator ItemParameter GHS Environmental Hazard ClassificationAquatic Toxicity (Category 2) Aquatic ToxicityToxic, may cause long-term adverse effects to the aquatic environment Degradation IntermediatesConcerns regarding environmental persistence Heavy Metal Content≤10 mg\/kg Arsenic Content≤2 mg\/kg Waste Disposal MethodDeliver to qualified institutions for incineration or biochemical treatment; strictly prohibit discharge into water bodies Application Recommendations Given the environmental properties of OP-7, special attention should be paid to environmental compliance in the following scenarios: Textile and Leather Export Products: If end products are sold to the EU or markets with APEO limit requirements, it is recommended to use more environmentally friendly alternatives (such as tty alcohol polyoxyethylene ethers) or strictly control residual levels and provide compliant test reports. Industrial Wastewater Discharge: Wastewater containing OP-7 must be treated by a professional wastewater treatment system to meet discharge standards before being released; it must not be directly discharged into water bodies or sewers. Pesticide Formulations: Pay attention to environmental requirements for adjuvants in relevant pesticide registrations. Daily and Household Detergents: Some green certifications or eco-label products have restricted APEO in formulations; attention should be paid to the environmental certification requirements of end products. Precautions Avoid direct discharge of the product into sewers or surce water during operation. In case of leakage, immediately use inert absorbent materials to treat and collect, then dispose of according to hazardous waste regulations. Test reports are batch-specific; indicators may vary between batches. Please provide the specific batch number when requesting. If environmentally friendly alternatives are needed, please consult Guoli Chemical for other non-APEO surctant products.

Question 5

What are the advantages of OP-7 Octylphenol Polyoxyethylene Ether compared to other similar products?

Accepted Answer

OP-7 Octylphenol Polyoxyethylene Ether stands out among similar products due to its moderate HLB value (approximately 11.7), low cloud point (25~35°C), and excellent oil-water bi-directional affinity. It is a multifunctional nonionic surctant integrating emulsification, wetting, and detergency, especially suitable for applications requiring room-temperature transparent systems and efficient penetration. Detailed Description In the series of Octylphenol Polyoxyethylene Ether products from Guoli Chemical, the core competitive advantage of OP-7 lies in its unique molecular structure design — the average addition of 7 ethylene oxide (EO) units places it in the "golden interval" of hydrophilic-lipophilic balance. Compared to homologues with higher EO numbers (such as OP-10, OP-13, OP-21, OP-30, OP-40), OP-7 has stronger hydrophobicity and more prominent affinity for oil phases and organic solvents, thus performing excellently in water-in-oil (W/O) and phase inversion emulsification systems, which is hard to match by high-EO products. The cloud point of OP-7 is only 25~35°C, a very special property among similar products. At room temperature, the product appears as a transparent oily liquid, cilitating observation, mixing, and transportation; when applied in cleaning or emulsification processes that require temperature response, its cloud point behavior can be utilized to achieve controllable phase separation effects, offering unique value in scenarios requiring precise temperature control such as metal degreasing cleaning and textile pretreatment. In contrast, high-EO products in the same series (e.g., OP-21 cloud point >100°C, OP-30 excellent water solubility at room temperature) cannot provide such temperature-sensitive characteristics. In addition, OP-7 combines the two practical advantages of low foaming and strong penetrability. The low-EO molecular configuration leads to lower foaming ability in aqueous solutions, making it particularly suitable for industrial scenarios that should not generate large amounts of foam, such as spray cleaning and continuous textile processing, reducing the use of defoamers, simplifying formulations, and lowering costs. Meanwhile, its penetrating ability is not weakened by the low-foam property; instead, it quickly wets the substrate surce, effectively improving detergency efficiency. Although OP-10 in the same series has excellent emulsifying power, its foam volume is relatively higher; OP-40 excels in dispersion and solubilization, but its wetting and penetrating properties are inferior to OP-7. Technical Parameters ParameterOP-7OP-10 (for comparison)OP-21 (for comparison) EO addition numberApproximately 7Approximately 10Approximately 21 HLB valueApproximately 11.7Approximately 13.5Approximately 16.0 Cloud point25~35°CApproximately 60~70°C>100°C Appearance (room temperature)Colorless to light yellow transparent oily liquidColorless to light yellow transparent liquidWhite to light yellow paste or solid Foam characteristicsLow foamingMedium foamingHigh foaming Water solubilityDispersible and emulsifiable in waterEasily soluble in waterCompletely water-soluble Surce tension (0.1% aqueous solution, 25°C)Approximately 30 mN/mNot availableNot available CMC (25°C)Approximately 0.2 mmol/LNot availableNot available pH value (1% aqueous solution)5.0~7.0Not availableNot available Active content≥99%Not availableNot available Application Suggestions Scenarios to prioritize OP-7: Metal surce cleaning and degreasing agents: The low-foaming property combined with ultrasonic or high-pressure spray cleaning allows rapid penetration and emulsification of machining oils and rust-proof greases, eliminating the need for additional defoamers. Textile pretreatment scouring and degreasing agents: Provides excellent washing and degreasing effects in desizing and scouring processes of gray brics; low foaming is suitable for pad-dyeing processes on continuous high-speed production lines. Pesticide emulsifiable concentrate emulsifiers: The moderate HLB value offers excellent emulsification compatibility with most organic solvent-based pesticide active ingredients, resulting in high emulsion stability upon dilution and good spreading on crops. Emulsion polymerization emulsifiers: Acts as a monomer emulsifier and stabilizer in emulsion polymerization systems such as acrylate and styrene-acrylic, effectively controlling latex particle size. Products requiring room-temperature transparent formulations: The cloud point is close to room temperature, and the product is transparent at normal temperatures, making it suitable for formulating liquid detergents or industrial cleaners with high transparency requirements. Recommended dosage: When used as an emulsifier, the recommended amount is 2%~8% of the oil phase weight; when used as a wetting/penetrating agent, add 0.1%~1.0% in the formulation. The specific dosage should be determined by experiments based on actual formulation systems and process conditions. Precautions OP-7 has a low cloud point (25~35°C). It may become turbid under high-temperature operation or storage conditions, which is a normal phenomenon. The transparency is restored upon cooling, and product performance is not affected. This product is irritating to eyes and skin. Protective gloves and goggles should be worn during operation. For specific safety measures, refer to the Safety Data Sheet (SDS). If higher HLB value emulsification needs or completely water-soluble systems are required, it is recommended to choose OP-10 or OP-21 from the same series.

Question 6

How should OP-7 octylphenol ethoxylate be stored? What is its shelf life?

Accepted Answer

OP-7 octylphenol ethoxylate should be stored in a cool, dry, and well-ventilated warehouse. Under original sealed packaging and conditions that meet storage requirements, the shelf life is two years. Detailed Description OP-7 octylphenol ethoxylate is a nonionic surctant with relatively stable chemical properties. It is not classified as a flammable liquid and can be stored and transported according to general chemical storage practices. Proper storage methods are crucial for maintaining product performance and effectiveness, with key considerations including temperature control, container airtightness, and protection from light. Under low-temperature conditions, the product may become cloudy or solidify, which is a normal physical change and not a sign of deterioration. Simply transfer the product to a room-temperature environment to slowly recover, stir evenly, and it can be used normally without affecting product quality. If the shelf life is exceeded, the product must be tested to confirm quality compliance before continued use. Storage Condition Requirements Storage ctorSpecific Requirement Temperature RangeRecommended 5°C to 35°C, avoid freezing Environmental RequirementsCool, dry, well-ventilated warehouse; avoid direct sunlight and high-temperature environments Container RequirementsKeep containers sealed to prevent moisture absorption and contamination; use closed containers made of stainless steel, polyethylene, or plastic-lined iron drums ProhibitionsKeep away from heat sources, sparks, open flames, and strong oxidizers; avoid prolonged contact with metal materials such as copper or aluminum Shelf LifeTwo years under original sealed packaging and compliant storage conditions Application Recommendations It is recommended that users prioritize using batches with earlier production dates (first-in, first-out principle) upon receiving the product to avoid long-term accumulation. After each use, immediately seal the container to minimize exposure to air and prevent moisture absorption and contamination. If the product becomes cloudy or separates during low-temperature storage in winter, do not directly heat or use an open flame; instead, place it at room temperature (15-25°C) to naturally warm up and stir evenly. Precautions Do not discard products exceeding a two-year shelf life directly. Contact the manucturer or a third-party testing institution for quality testing. If the indicators meet standards, the product can still be used. The storage area should be equipped with necessary spill emergency response materials, such as inert absorbents (sand, vermiculite, etc.), to handle accidental packaging damage. Avoid discharging the product into sewers or surce water. Waste disposal should be carried out by qualified waste treatment cilities through incineration or biochemical treatment. Strictly prohibit eating, drinking, or smoking in the storage area. Thoroughly clean exposed body parts after handling.

Question 7

What safety precautions should be taken when using OP-7 octylphenol polyoxyethylene ether?

Accepted Answer

OP-7 octylphenol polyoxyethylene ether is a low-toxicity nonionic surctant, but it can cause eye and skin irritation and is toxic to aquatic life. Personal protective measures should be taken during operation and discharge into water environments should be avoided. Detailed Description OP-7 (octylphenol polyoxyethylene ether) is not classified as a flammable liquid, but it may decompose when exposed to high temperatures or strong oxidizers, releasing carbon monoxide, carbon dioxide, and irritating vapors. Therefore, the operating environment should be kept away from heat sources and strong oxidizers. Its GHS hazard classification mainly includes: skin irritation (Category 2), eye irritation (Category 2A), and aquatic toxicity (Category 2). The flash point is above 150°C (closed cup), so it is not classified as flammable, but standard industrial explosion-proof measures are still recommended. In terms of health, this product is clearly irritating to the eyes and mildly to moderately irritating to the skin. Long-term or repeated contact may cause skin detting and dermatitis. Inhalation of hot vapors or mists may cause respiratory discomfort, while ingestion may cause gastrointestinal discomfort. The workplace should maintain good ventilation. If there is a possibility of aerosol generation, local exhaust ventilation is recommended. After operation, thoroughly wash exposed areas with soap and plenty of water. Eating, drinking, or smoking is strictly prohibited in the workplace. Special attention should be paid to the environment: OP-7 is toxic to aquatic life, and its degradation intermediates raise concerns about environmental persistence, potentially causing long-term adverse effects on the water environment. Therefore, it is strictly prohibited to discharge the product into sewers, surce water, or drainage wells. In case of leakage, immediately absorb with inert absorbent materials (such as sand, vermiculite), and waste should be disposed of by qualified cilities through incineration or biochemical treatment. Personal Protective Equipment Requirements Body PartProtective Measures HandsWear chemical-resistant protective gloves, such as nitrile rubber or thick neoprene gloves. Replace immediately if contaminated or damaged. EyesWear splash-proof safety goggles. Skin and BodyWear appropriate protective work clothing. Contaminated clothing should be washed before reuse. RespiratoryIf ventilation is insufficient or aerosols/mists are present, wear suitable respiratory protective equipment. Storage Condition Recommendations Recommended storage temperature is between 5°C and 35°C. Avoid freezing (cloudiness or solidification may occur at low temperatures, but can slowly recover at room temperature without affecting quality). Store in a cool, dry, well-ventilated warehouse. Keep containers tightly closed to avoid moisture absorption and contamination. Keep away from heat sources, sparks, open flames, and strong oxidizers. Use sealed containers made of stainless steel, polyethylene, or lined iron drums. Avoid prolonged contact with metals such as copper or aluminum. Under original sealed and compliant storage conditions, shelf life is two years. Emergency Response Key Points Skin contact: Immediately remove contaminated clothing and rinse thoroughly with plenty of water and soap for at least 15 minutes. If redness, pain, or persistent irritation occurs, seek medical attention. Eye contact: Immediately rinse with plenty of water or saline solution, opening eyelids and rinsing thoroughly for at least 15 minutes. Rotate eyes to ensure full rinsing. Seek medical attention immediately. Do not rub eyes. Ingestion: Do not induce vomiting. Rinse mouth with water. If conscious, drink a small amount of water (at most one cup). Seek medical attention immediately and show the container or label. Spill disposal: For small spills, absorb with inert absorbent material and collect in closed containers. For large spills, build dikes to control spread, transfer with pumps, and prevent entry into waterways.

Question 8

How to use OP-7 octylphenol polyoxyethylene ether? What is the recommended dosage?

Accepted Answer

The dosage of OP-7 varies depending on the specific application scenario, typically ranging from 0.1% to 10% of the total formulation, and the optimal dosage needs to be determined through experimental optimization. Detailed Description OP-7 (octylphenol polyoxyethylene (7) ether) is a nonionic surctant with an HLB value of 11.7, combining excellent emulsifying, wetting, dispersing, and cleaning functions. Its usage methods are flexible and diverse: it can be directly added to the oil phase, stirred evenly, and then mixed with the water phase to form an emulsion; it can also be dissolved in the water phase first and then mixed with the oil phase; or it can be directly added to the final formulation and stirred evenly. In most industrial applications, it is recommended to operate within a temperature range of 20~50°C to ensure good fluidity and dispersibility. The water solubility of this product is characterized by dispersibility and emulsification in water; complete dissolution depends on concentration and temperature. Due to its cloud point characteristics (25~35°C), it is convenient for blending in a transparent state at room temperature. During operation, it should be noted that the product may become turbid or solidify at low temperatures, but it can slowly recover at room temperature without affecting quality. As a highly effective surctant, its CMC value is approximately 0.2 mmol/L, and the surce tension can be reduced to about 30 mN/m (0.1% aqueous solution, 25°C), meaning that a low dosage can achieve significant effects. The final dosage should be determined by combining ctors such as the formulation system, water hardness, operating temperature, and process conditions. Technical Parameters ParameterValueDescription HLB Value11.7Moderate hydrophilic-lipophilic balance, suitable for O/W emulsification systems Critical Micelle Concentration (CMC)Approx. 0.2 mmol/L (25°C)Low CMC, a small amount can form micelles to exert surce activity Surce Tension (0.1% aqueous solution)Approx. 30 mN/m (25°C)Highly efficient surce activity, strong wetting and penetration ability Cloud Point25~35°CNonionic characteristics, operating temperature needs attention pH Value (1% aqueous solution)5.0~7.0Weakly acidic to neutral, mild properties Active Content≥99%High purity, equivalent to the dosage of active ingredients Application Recommendations and Reference Dosage The following dosages are general recommendations based on industry experience (calculated by total formula weight), and the data comes from general industry practices. The specific dosage should be determined through experiments: Liquid Detergents/Hard Surce Cleaners: 2%~8%. Used as a wetting, penetrating, and emulsifying component, combined with anionic or nonionic surctants, with significant effects on oil stain removal. Textile Pretreatment (Desizing/Scouring/Washing): 1~5 g/L (working solution concentration). Provides excellent washing, degreasing, and penetration effects, adjustable according to the degree of contamination in the bric and process conditions. Pesticide Emulsifiable Concentrate/Emulsion in Water Emulsifier: 3%~10% (based on oil phase or total formulation). Used in combination with nonionic or anionic emulsifiers to effectively promote the stable dispersion of active pesticide ingredients and improve the spreadability of the spray liquid; typically needs to be compounded with emulsifiers of lower HLB values. Emulsion Polymerization Emulsifier: 0.5%~3% (based on total monomer weight). Used as a monomer emulsifier and stabilizer in acrylate, styrene-acrylic, vinyl acetate-acrylic systems; it is recommended to compound with nonionic or anionic emulsifiers to ensure polymerization stability. Metal Cleaning and Degreasing Agents: 2%~6%. In acidic/alkaline cleaning systems, it can quickly wet metal surces and remove processing oils; better results when combined with ultrasonic or spray cleaning. Metalworking Fluids (Cutting Fluids/Grinding Fluids, etc.): 1%~5%. Used as an emulsifying and dispersing aid to improve processing cooling performance and compatibility with extreme pressure additives. Papermaking and Leather Degreasing/Wetting Aids: 0.1%~2%. Accelerates the penetration of cooking liquor and promotes the removal of resin and grease substances. Precautions Environment and Toxicology: OP-7 belongs to the alkylphenol polyoxyethylene ether class, toxic to aquatic organisms, and may cause long-term adverse effects on the aquatic environment. Its degradation intermediates raise concerns about environmental persistence. It is recommended to pay attention to local environmental regulations on APEO substances and consider replacing with environmentally friendly alternatives when necessary. Personal Protection: When handling, wear protective gloves (nitrile rubber or thick neoprene), safety goggles, and protective work clothing to avoid direct contact with eyes and skin. Thoroughly wash exposed areas after operation. Usage Process: Avoid contact with strong oxidizers. It is not recommended to use materials such as copper or aluminum for long-term storage. The product may become turbid or solidify at low temperatures; it can slowly recover at room temperature and be stirred evenly before use. Compatibility Testing: Due to large differences in application systems, it is recommended to first conduct small-scale trials in new formulations or processes to confirm emulsification stability, foam characteristics, and compatibility with other auxiliaries. Dosage Optimization: The above recommended dosages are for reference only; the specific amount should be determined through experiments to achieve the best balance between performance and economic benefits.

Question 9

What are the main industries and processes where OP-7 Octylphenol Polyoxyethylene Ether is primarily used?

Accepted Answer

OP-7 Octylphenol Polyoxyethylene Ether is widely used in six core industries including industrial cleaning, textile dyeing and finishing, pesticide formulations, emulsion polymerization, metal processing, and paper and leather. It is a multifunctional nonionic surctant integrating emulsification, wetting, dispersion, and detergency functions. Detailed Description OP-7 (Octylphenol Polyoxyethylene (7) Ether) has become an irreplaceable key auxiliary in multi-industry formulations due to its moderate HLB value and excellent surce activity. The hydrophobic octylphenol group in its molecular structure forms a good balance with the hydrophilic group of 7 EO chains, enabling outstanding directional adsorption at the oil/water interce, thus achieving efficient emulsification and dispersion. This product exhibits outstanding chemical stability against acids, alkalis, and hard water ions, maintaining activity in complex industrial environments and offering broad formulation adaptability. Meanwhile, its cloud point characteristic keeps the product transparent at room temperature, cilitating easy blending and use, with excellent penetrability and detergency. A single component can meet multiple process requirements, effectively simplifying formulation design. According to data from Guoli Chemical, the main applications of OP-7 cover six industry sectors, each serving different functional roles. The following is a detailed explanation. Detailed Application Fields IndustrySpecific Process/ApplicationFunctional Role Industrial and Household Liquid CleaningDishwashing detergents, hard surce cleaners, bric liquid detergentsEfficient wetting agent, penetrant, and emulsifier, enhancing oil stain removal capability Textile IndustryDesizing, scouring, bleaching pretreatment processes; level dyeingDetergent, degreasing agent, leveling agent, ensuring dyeing uniformity Pesticide FormulationsEmulsion in water (EW), microemulsion (ME), emulsifiable concentrate (EC) formulationsEmulsifier, promoting stable dispersion of pesticide active ingredients in water or solvents, improving spray adherence Emulsion PolymerizationAcrylate, styrene-acrylic, vinyl acetate-acrylic synthetic emulsion polymerization systemsMonomer emulsifier and stabilizer, controlling latex particle size, ensuring stable polymerization process Metal Surce Treatment and ProcessingAcidic/alkaline cleaning systems, ultrasonic/spray cleaning, cutting fluids, grinding fluids, forming lubricantsCleaning degreasing agent (quickly wetting metal surces, removing processing oils and rust preventives); processing fluid additive (emulsification and dispersion, enhancing cooling and compatibility with extreme pressure additives) Paper and Leather IndustryPulping and papermaking cooking penetration, resin removal; leather soaking, degreasing processesDegreasing agent and wetting auxiliary, accelerating liquid penetration, promoting removal of tty substances, improving treatment uniformity Technical Parameters ParameterSpecification Product NameOP-7 Octylphenol Polyoxyethylene Ether CAS Number9036-19-5 Chemical TypeNonionic Surctant (Alkylphenol Polyoxyethylene Ether) AppearanceColorless to light yellow transparent oily liquid (room temperature); may be pasty at low temperature pH Value (1% Aqueous Solution)5.5 – 7.5 Flash Point>150°C (closed cup), not classified as flammable Water SolubilityDispersible and emulsifiable in water; complete dissolution depends on concentration and temperature Shelf LifeTwo years (in original sealed container, cool, dry, and ventilated place) Recommended Storage Temperature5°C – 35°C Application Recommendations Usage Method: OP-7 can be directly added to the aqueous or oil phase with stirring for dispersion, or compounded with anionic, cationic, and amphoteric surctants for synergistic effects. In emulsion polymerization, it is recommended to be added as a monomer emulsifier during the pre-emulsification stage; in metal cleaning formulations, combining with alkaline aids (such as sodium carbonate, sodium metasilicate) can significantly enhance degreasing efficiency. Compatibility Recommendations: This product has excellent chemical compatibility and can be compounded with various industrial auxiliaries. In pesticide formulations, it is often used in combination with nonionic/anionic emulsifier systems; in textile pretreatment, it can be combined with penetrants, chelating agents, alkali agents, etc., to form a composite working solution. Precautions Eye Protection: This product is irritating to eyes (GHS Category 2A). Splash-proof safety goggles must be worn during operation. In case of contact, immediately flush with plenty of water for at least 15 minutes and seek medical attention. Skin Protection: Prolonged or repeated contact may cause detting and dermatitis. It is recommended to wear nitrile or thick neoprene protective gloves and thoroughly wash exposed areas after operation. Environmental Safety: Toxic to aquatic organisms, may cause long-term adverse effects to the aquatic environment. Do not discharge into drains or surce waters. Waste disposal should be carried out by qualified agencies. Low Temperature Storage: The product may become turbid or solidify at low temperatures. This is normal and can be restored slowly at room temperature without affecting product quality or performance. Container Material: It is recommended to use stainless steel, polyethylene, or plastic-lined iron drums. Avoid long-term contact with metals such as copper or aluminum.

Question 10

What are the physicochemical technical parameters of OP-7 octylphenol polyoxyethylene ether?

Accepted Answer

Comprehensive Analysis of Physicochemical Technical Parameters of OP-7 Octylphenol Polyoxyethylene Ether Detailed Explanation OP-7 (Octylphenol polyoxyethylene (7) ether, CAS No.: 9036-19-5) is a nonionic surctant produced by Guoli Chemical. Its molecular formula is C₂₈H₅₀O₈, with an average molecular weight of approximately 514 g/mol. The chemical structure consists of a lipophilic octylphenol group and 7 hydrophilic ethylene oxide (EO) units, with an HLB value of 11.7, making it an emulsifying and penetrating surctant with moderate hydrophilic-lipophilic balance. At room temperature, the product appears as a colorless to light yellow transparent oily liquid, which may become viscous or paste-like at low temperatures (melting point below -10°C), with a slight characteristic odor. Its cloud point ranges from 25 to 35°C. This property allows it to remain transparent and operable at normal temperature while achieving phase transition under near-body temperature or mild heating conditions, making it a key parameter for designing temperature-controlled emulsification formulas. OP-7 exhibits outstanding comprehensive performance: surce tension approximately 30 mN/m (0.1% aqueous solution, 25°C), critical micelle concentration approximately 0.2 mmol/L, demonstrating efficient intercial tension reduction; it also has practical characteristics such as alkali resistance, low foaming, and easy solubility in both oil and water, making it widely adaptable in various fields including industrial cleaning, textile processing, and pesticide emulsification. Technical Parameters Parameter ItemTechnical SpecificationRemarks/Conditions AppearanceColorless to light yellow transparent oily liquidMay become viscous to paste at low temperatures Ion TypeNonionicAlkylphenol polyoxyethylene ether type CAS No.9036-19-5— Molecular FormulaC₂₈H₅₀O₈ (average n=7)— Molecular WeightApproximately 514 g/mol— Active Content≥99%Solid content also ≥99% HLB Value11.7Moderate hydrophilic-lipophilic balance Density1.05~1.07 g/cm³25°C Kinematic ViscosityApproximately 250 mm²/s25°C Low Shear ViscosityApproximately 250 mPa·s25°C Refractive Index1.485~1.49020°C Cloud Point25~35°C— Melting Point<-10°CDoes not freeze at low temperatures Flash Point (Closed Cup)Approximately 230°CNot classified as flammable pH Value (1% Aqueous Solution)5.0~7.0Weakly acidic to neutral Surce TensionApproximately 30 mN/m0.1% aqueous solution, 25°C Critical Micelle Concentration (CMC)Approximately 0.2 mmol/L25°C Hydroxyl ValueApproximately 109 mg KOH/g— Acid Value≤1 mg KOH/g— Saponification Value≤1 mg KOH/g— Iodine Value≤1Unsaturation 0 mol/kg Amine Value≤1Tertiary amine content ≤0.1% Moisture Content≤1.0%— Free Alcohol≤1%— Heavy Metals≤10 mg/kg— Arsenic (As)≤2 mg/kg— Water SolubilityEasily soluble in oil and waterDispersible and emulsifiable in water Foaming CharacteristicsLow foaming— Alkali ResistanceAlkali resistantStable to acids, alkalis, and hard water HygroscopicityHygroscopicRequires sealed storage Chemical StabilityStable when stored sealed at room temperatureAvoid strong oxidizers Storage Temperature5~35°CAvoid freezing Shelf LifeTwo yearsUnder original sealed conditions Packaging Specifications50kg plastic drum / 200kg plastic drum / IBC ton drumStainless steel or plastic-lined container packaging Application Recommendations Based on the physicochemical properties of OP-7 with an HLB value of 11.7 and a cloud point range of 25~35°C, this product is particularly suitable for the following scenarios:

OP-7 Octylphenol Ethoxylate

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Property	Value
CAS No.	9036-19-5
Molecular Formula	C28H50O8 (C8H17C6H4O(CH2CH2O)7H, avg.n=7)
Appearance	Colorless to pale yellow liquid
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 514 g/mol
Cloud Point	25~35 °C
Active Content	≥99%
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.0
Iodine Value	≤1
Solubility	Readily soluble in oils and water
Surface Tension	~30 mN/m (0.1%aq. soln., 25°C)
CMC	~0.2 mmol/L (25℃)
Acid Value	≤1 mg KOH/g
Saponification Value	≤1 mg KOH/g
Hydroxyl Value	~109 mg KOH/g
Moisture	≤1.0
Density	1.05~1.07 g/cm³ (25°C)
Kinematic Viscosity	~250 mm²/s (25°C)
Refractive Index	1.485~1.490 (20°C)
Flash Point	~230°C (closed cup)
Hygroscopicity	Readily hygroscopic
Chemical Stability	Stable at room temperature; avoid strong oxidizers
Amine Value	≤1
Tertiary Amine Content	≤0.1%
Foam Property	Low foam
Alkali Resistance	Alkali resistant
Unsaturation	0 mol/kg
Viscosity	~250 mPa·s (25°C)
Melting Point	<-10°C
Low Shear Viscosity	~250 mPa·s (25℃)
Solid Content	≥99%
Free Alcohol	≤1%
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg